Detachable gas-fitting.



R. BEHR.

DBTACHABLB GAS FITTING.

APPLIoATIoN FILED APB. ao, 191s.

1,074,1 OO, Patented Sept. 30, 1913.

DETACHABLE e GAS-FITTING.

nominee.

`Specieation of yLetters Patent.

Application filed April 30,;1913.

Patented Sept. 30,1913. serial No. 764,558.

To all fr0/wm, t may conce/1in,

Be it kno-wn that I, Runonir Bunn, a citi.- Zen ot' the German Empire, residing at Kolberg, in the Kingdom of Prussia, Germany, have invented certain `new and useit'ul Improvements in Detachable Gas-Fittings; and l do hereby declare the following to be a ii'ull, clear, and exact description of the invention, such as will enable others skilled in the art to `which it appertains to make and use the same.

My invention relates to improvements in detachable gas fittings and more particulai-ly in gas littings ot' the class which are used for temporarily connecting a gaslixture to the gas supply system.

The object of the improvements is to provide gas littings of this class in which the valve which forms ay part of the iittings and is inclosed in the gas supply pipe is not accessible from the outside and is closed by a locking device which can be set in nonlecking position exclusively by means of a key formed on thenipple of the ixture intended 'to be connected to the supply pipe, and in which the nipple is preferably constructed at its end in the form of a cock which has a tight fit in the supply pipe and provides a means for regulating the flow ot' the gas to the burner.

lVith this and other objects in view my invention relates to the matters described hereinafter and particularly pointed out in the appended claims.

1For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawing, in which the` same letters of reference have been used in all the views to indicate corresponding parts.

In said drawing Figure 1, is a longitudi- `nal section of the gas itting with the nipple of a `fixture placed therein,.Fig. 2, isa cross.

section of the fitting taken on the line an?) of Fig. 1, Fig. 3, is a cross-section of thel end et the nipple connected to the Fixture taken on the line c-d of Fig. 1, Fig. 1, is a front view of the tting's with the nipple detached, Fig. 5, isa side view of the gas Iittings with the nipple and flexible tube connected thereto, and Fig. 6, is a Similar side `view showing' the nipple and flexible tube detached.

Referring to the example illustrated in the drawing, a gas supply pipe 1 is con structed at its end in the form of a Valve the rotary plug 2 of which is held in position by means ol. a nut Q1 and washer 22 and is formed with a longitudinal bore S adapted to communicate in the open position ot the valve through a lateral branch 81 with a by-pass 10 made in the wall of the pipe 1. r1`hc valve plug 2 is adapted to be locked in closing position by a suitable locking member which in the example shown in the drawing consists of a flat and substantially U-shaped spring 5 located in the b f-pass 1() and provided at its end bearing' on the plug Q with a `nose 51 which is adapted to engage in the closed position of the valve plug in a notch 3 thereof. The locking' member' or spring 5 is disposed in such aposition, that it is adapted to be engaged by a. key or the like which is passed into thc valve `i'roin the open end thereof, and when thus engaged itis pushed backward andreleases the plug so as to permit the saine to bcturncd for opening' the valve.

Ihe key for unlocking the plug is provided by the end ot a nipple 7 which at its end is constructed in the form of a plug 11 and is adapted to be pushed into the pipe 1 for connecting the gas supply pipe with the fixture. As shown lthe plug `11 is formed with a longitudinal passage 9 having a lateral branch 91, which is adapted to be placed in communication with the by-pass 10, 4as has been illustrated in Fig. 1. At its end the plug 11 provided at the end ot the nipw ple 7 is made in the term of a key by means ot' which the plug 2 can be turned in open ing or closing position. For this purpose the plug 11 is formed with a pair of longitudinal bores adapted to engage pins f1 secured to the outer end ot the plug 2. lVhen placed in the pipe 1 the nipple 7 is adapted to be held in position by means of a nut 12 screwed to the outer end of the pipe 1 and provided with an inner flange 121 'formed `with notches 111. At parts corresponding to the notches 111 the `nipple 7 is provided with noses 1G. By means o1 this construction the nipple 7 can `bepushed `into `the pipe 1 with its noses passing through the notches 14:, and a'lter turning the tube it is locked in position by the noses 16. To insure a tight fitting' of the plug 11 after wear ot' the parts the noses 1G are equipped with adjusting screws 161. After being set in its proper position the nut 1Q is locked by a locking screw 17. For operating the nipple 7 it is equipped with a 

